@misc{rfc6009,
    series =    {Request for Comments},
    number =    6009,
    howpublished =  {RFC 6009},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC6009},
    url =       {https://www.rfc-editor.org/info/rfc6009},
    author =    {Ned Freed},
    title =     {{Sieve Email Filtering: Delivery Status Notifications and Deliver-By Extensions}},
    pagetotal = 15,
    year =      2010,
    month =     oct,
    abstract =  {This document describes the "envelope-dsn", "redirect-dsn", "envelope-deliverby", and "redirect-deliverby" extensions to the Sieve email filtering language. The "envelope-dsn" and "envelope- deliverby" extensions provide access to additional envelope information provided by the delivery status notification (DSN) and Deliver-By SMTP extensions, respectively. The "redirect-dsn" and "redirect-deliverby" extensions extend Sieve's redirect action to provide control over delivery status notification and Deliver-By parameters, respectively. {[}STANDARDS-TRACK{]}},
}